Medicine

Bukhari :: Book 7 :: Volume 71 :: Hadith 589

Narrated Anas:

Some people were sick and they said, "O Allah's Apostle! Give us
shelter and food. So when they became healthy they said, "The
weather of Medina is not suitable for us." So he sent them to
Al-Harra with some she-camels of his and said, "Drink of their
milk." But when they became healthy, they killed the shepherd of
the Prophet and drove away his camels. The Prophet sent some people
in their pursuit. Then he got their hands and feet cut and their
eyes were branded with heated pieces of iron. I saw one of them
licking the earth with his tongue till he died.